Congratulations! You bring an idea to brick all Russian phones including phones of opposition, people who against the war, political prisoners, and other people who just live in the country.
I don't fault OP for brainstorming ideas, especially since I assume its done with the intent of finding ways to protect civilians, but you point out what is critical here: the west cannot give up on the Russian people. By-and-large they do not support this act of war and the best way to further our interests is to continue to foster a desire for change in them.
If the war is seen as something distant that has no impact at all on the average Russian's life will they actually care about it or will they just ignore it?
To be clear I don't wish anything bad for the general Russian population, among which I have many friends, let alone Putin's opposition. And this may not be the best strategic idea, but it's a possible one that fits the theme of this community - so I think the snarkiness is uncalled for.
Yeah, idk if it would end the conflict exactly. But making more of the citizens there mad about it could help. Let's cut their cable feeds and internet services. I know they have some of their own, but imagine not being able to Google stuff.